清空筛选条件
清空筛选条件

How to assign values in 3D matric bed on indexing of other matrix?

3 次查看（过去 30 天）
Jigar
Jigar 2022-12-11
评论： Jigar 2023-3-21
I am trying to assign values to meshpoints from samplepoints and I have 3 matrix. 1st is collection of data from samplepoints (Timeseries) = 334x49792, 2nd has index column numbers for mesh from the nearest values of Timeseries 3rd is CP where values should be stored from Timeseries. Now, I want to assign values of Timeseries to meshpoints based on each values of IDX and these values represent the column number of Timeseries.
Timeseries values (49792x334)
-620 -673 -251 -224 -2 -93 -8 -49....
-647 -615 -282 -190 -79 -54 -59 -22...
-594 -553 -167 -151 -175 -31 -71 -24...
-547 -527 -179 -120 -233 -47 -46 -53...
-506 -544 -151 -99 -163 -97 -46 -5...
-498 -547 -23 -32 -44 -137 -59 -19...
IDX (in this matrix column numbers are given of Timeseries from which values Timeseries should be assigned in CP
IDX(81x126) These values are actually column numbers of time series.
1 1 1 1 1 1 1 2 2 2 2 2
1 1 1 1 1 1 1 2 2 2 2 2
1 1 1 1 1 1 1 2 2 2 2 2
1 1 1 1 1 1 1 2 2 2 2 2
29 29 29 29 29 29 29 30 30 30 30 30
29 29 29 29 29 29 29 30 30 30 30 30
29 29 29 29 29 29 29 30 30 30 30 30
CP (81x126x49792)
-620 -620 -620 -620 -620 -620 -620 -673 -673 -673 -673 -673 (values from column 1 & 2 of Timeseries - only 1st row values)
-620 -620 -620 -620 -620 -620 -620 -673 -673 -673 -673 -673 (values from column 1 & 2 of Timeseries - only 1st row values)
-620 -620 -620 -620 -620 -620 -620 -673 -673 -673 -673 -673 (values from column 1 & 2 of Timeseries - only 1st row values)
-620 -620 -620 -620 -620 -620 -620 -673 -673 -673 -673 -673 (values from column 1 & 2 of Timeseries - only 1st row values)
-420 -420 -420 -420 -420 -420 -420 -771 -771 -771 -771 -771 (values from column 29 & 30 of Timeseries - only 1st row values)
-420 -420 -420 -420 -420 -420 -420 -771 -771 -771 -771 -771 (values from column 29 & 30 of Timeseries - only 1st row values)
-420 -420 -420 -420 -420 -420 -420 -771 -771 -771 -771 -771 (values from column 29 & 30 of Timeseries - only 1st row values)
-420 -420 -420 -420 -420 -420 -420 -771 -771 -771 -771 -771 (values from column 29 & 30 of Timeseries - only 1st row values)
How to code this?

请先登录，再回答此问题。

回答（1 个）

Varun
Varun 2023-3-21
Hello,
I think you just need to use the index values present in ‘IDX’ and get values from ‘samplepoints’ and then, reshape the array to get the required dimensions.
CP=samplepoints(:,IDX);
% samplepoints is the timeseries array
[r,c] = size(IDX);
[z, ~] = size(samplepoints);
CP = reshape(CP',[r,c,z]);
Hope this helps!

类别

在 Help Center 和 File Exchange 中查找有关 Matrices and Arrays 的更多信息

标签

产品


版本

R2022b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by